3/2 tg x*sin 2x-2cos^2 x=8sin x-5 cos x не равно 0 3/2 tg x*2sin xcosx-2cos^2 x=8sin x-5 3 sin^2 x-2cos^2 x=8sin x-5 3 sin^2 x-2+2sin^2 x=8sin x-5 5 sin^2 x-8sin x+3=0 5 sin^2 x-5sin x-3 sin x+3=0 (5sin x-3)(sin x-1)=0 5sin x=3 т.к. sin x не равно 1 по ОДЗ sin x=3/5 x=(-1)^n arcsin(3/5)+πn
3/2 tg x*sin 2x-2cos^2 x=8sin x-5
cos x не равно 0
3/2 tg x*2sin xcosx-2cos^2 x=8sin x-5
3 sin^2 x-2cos^2 x=8sin x-5
3 sin^2 x-2+2sin^2 x=8sin x-5
5 sin^2 x-8sin x+3=0
5 sin^2 x-5sin x-3 sin x+3=0
(5sin x-3)(sin x-1)=0
5sin x=3 т.к. sin x не равно 1 по ОДЗ
sin x=3/5
x=(-1)^n arcsin(3/5)+πn